Keeping the traction 1-2nd shift with Paxton 2200SL, Lund Tune 6R80

[Ninjavitis]

11 At 129

• Ninjavitis
• Apr 9, 2019

This was my best run from Saturday. My car definitely has 10s in it, but, I am struggling to get the power down consistently. I was able to get several good 1st gear hooks and cut a 1.7 60ft but as soon as second gear hits I loose it traction wise- enough to totally kill the run because I have to correct the vehicle direction. When I sink in to 2nd I can hold the power (feels a little squirrely toward 6500-7500 but it goes to third by then). I know the will run faster than a stick, I just wanted to see techniques for managing the hard 1st to 2nd shift safely without losing ET. Do I try to pedal the shift or short shift it?

TLDR: Car has the traction to cut 1.7 60' but breaks them totally loose when hitting second and is hard to regain quickly. Advice?

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[Tommy V]

What tire u using?

 

[Jay-rod427]

What mods, who's tuning?

 

[SolarFlare]

Need some more heat on them tires, assuming they are a DR.

 

[Ninjavitis]

What tire u using?

275/40/17 MT ET Street R- tire can hold the grip for launch really well- I cut a 1.7 60 before nearly spinning out when it banged 2nd.

 

[Ninjavitis]

Need some more heat on them tires, assuming they are a DR.

Yessir. How long to burn out for? I didn't hold it too long, about 4 seconds. MT ET Street Rs

 

[Ninjavitis]

What mods, who's tuning?

Paxton 2200SL and fuel, Lund remote tune.

 

[SolarFlare]

Yessir. How long to burn out for? I didn't hold it too long, about 4 seconds. MT ET Street Rs

1st gear or 2nd? if youre doing 1st then thats your problem. You should start burnout in 1st, then shift to 2nd and hold it around 5-6k rpm for 5-7 seconds. Then releasing brakes and letting it roll forward.

 

[Ninjavitis]

1st gear or 2nd? if youre doing 1st then thats your problem. You should start burnout in 1st, then shift to 2nd and hold it around 5-6k rpm for 5-7 seconds. Then releasing brakes and letting it roll forward.

Just replayed my run, definitely only in second for a second or so. Thank you. It feels like I burnout forever but it's only actually a fraction of the time when I rewatch my runs.

 

[Jay-rod427]

Lund can soften up the shifts so it doesn't smash the tire so hard, but at the end of the day it's a lot of power, tires, and suspension work likely. I'm currently fighting getting my car to hook at the launch and shifts with more tire than you have.

 

[bluebeastsrt]

If this is your first time out. Id make a second trip and get more data. Might just have been shitty track prep. Also log your passes to see whats going on.

 

[18 Smoke]

Man I would try a 305/45/17 R. The taller/wider tire will kill some gear while providing more rubber on the ground. Maybe see if you can borrow a set at the track for a pass and see if that’s not the answer

 

[kcc0521]

If this is your first time out. Id make a second trip and get more data. Might just have been shitty track prep. Also log your passes to see whats going on.

I vote for bad track prep or wrong tire pressure. The tires should have 18-20 psi on them hot. You don't need a long burnout unless it is really cold out. Are you running a stall? I do my burnouts in 1st gear and I have 3.73 gears so a 2nd gear burnout is not needed. Get back to the track and play around some more. Also make sure you line up in the groove.

 

[Tommy V]

Yup.tire pressure it critical!!!.

 

[kcc0521]

Also check the pressure after each pass because the pressure increases after burnouts

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